Tribeca Resources Reports Fieldwork Progress at Jiguata Copper Project

VANCOUVER, BC — February 12, 2026 — Leads & Copy —

Tribeca Resources Corporation (TSXV: TRBC) (OTCQB: TRRCF) reports that fieldwork is progressing at the Jiguata porphyry copper exploration project, running parallel with preparations to commence drilling on the Chirsposo Sur target at the La Higuera project.

Pre-drilling exploration activities are partially completed at the Jiguata Property, with data and results now pending. Preparations are underway for Phase 3 drilling at the La Higuera IOCG Project, following the signing of an access agreement over the Chirsposo Sur Target area. Torrey Hills Capital has been engaged to provide market awareness and investor relations services. Stock options have been granted to Global Ore Discovery Pty Ltd, which is advising on exploration work at the Jiguata Property, or to an entity controlled by the principals of GlobalOre.

Tribeca Resources CEO, Dr. Paul Gow, said the company is pleased with the rapid start to the field program at the Jiguata Property. He added that information coming in from geological mapping and preliminary satellite data interpretation confirms the presence of multiple large alteration systems, with a variety of alteration assemblages commonly associated with high sulphidation epithermal environments.

Gow also noted that the company is moving ahead rapidly with preparations for drill testing of the Chirsposo Sur Target at the La Higuera IOCG Project, with drilling intended to commence in March. He said the company is eager to see what the drill core yields in this compelling target that displays coincident anomalies in multiple geophysical datasets and sits just below shallow gravel cover.

The Jiguata Property is a 10,000 hectare property located in the Tarapacá region in northern Chile. It is situated in the northern extension of the Palaeocene and Eocene-Oligocene porphyry copper belts where it is overprinted by the younger Miocene Belt of magmatism that hosts recent large scale high sulphidation epithermal gold and porphyry copper-gold discoveries further to the south, including Vendaval Cu-Au Porphyry (First Quantum) and Salares Norte Au-Ag High Sulphidation Epithermal (Goldfields).

Tribeca's first field program since signing the Jiguata Property option agreement (on 28 October, 2025), commenced in December 2025 and significant progress continues to be made. Geological mapping to date has been focused on the four large alteration systems identified from satellite imagery and historic mapping. Mineral assemblages commonly associated with high sulphidation epithermal alteration are present, including broad zones of quartz-alunite alteration and localized vuggy silica zones. Lesser propylitic and phyllic alteration, which can be associated with deeper or more distal portions of porphyry-high sulphidation systems, has also been mapped within the most northwestern alteration system.

Preliminary mapping also indicates the presence of potential porphyry-related quartz-dominated veins, typically termed ‘B’ or ‘D’-type veins in the central project area. Multiple hydrothermal breccias, commonly with the matrix replaced by quartz-alunite have been mapped, as has at least one dacitic dome complex. Mapping is ongoing, with a focus on providing more detail within the zones considered as prospective based on the initial mapping.

In general, the mapping appears to indicate that faults of northeast and northwest orientations are predominant. This accords with historic mapping and with the apparent regional control on the alteration zones delineated in the Worldview3 data.

Rock and soil sampling has been ongoing, with approximately 370 soil and 50 rock samples collected to date. The soil sampling to date has been focused within the exposed central alteration zone on 200m x 200m or 200m x 100m staggered grids. Laboratory results are awaited, but analysis undertaken on the samples via pXRF provides a preliminary outline of elemental distribution, with data still being processed. The pXRF results are preliminary in nature and are used for screening purposes; laboratory results are pending and will be reported once received.

Approximately 100 square kms of Worldview 3 high resolution multispectral satellite imagery was tasked and acquired in December 2025 with cloud free data received in early January 2026. The resulting high-resolution imagery is being utilised by the mapping team for fact and interpretation maps. False colour images produced have highlighted four alteration centres aligning along regional NW and crosscutting NE structures. Initial interpretation indicates that these centres are displaying advanced argillic to intermediate argillic alteration colouring with coincident areas of strong iron oxides (gossanous), and potentially jarosite, which are consistent with the upper parts of a high sulphidation epithermal and the tops ofporphyry deposits elsewhere in the Andes.These satellite‑derived alteration interpretations are preliminary in nature and require further field confirmation.

The field collection component of a ground magnetic survey by Argali Geofísica Chile E.I.R.L was completed on 19 January 2026. Most of the project area was covered with 200m-spaced east-west lines. In general, the young flat lying volcanics are moderately magnetic, which produces significant near surface noise. Where the overlying unit has been eroded or is not present the magnetic intensity is significantly lower. Final products, including a 3D inversion, are awaited. The results will be integrated with the geological mapping and other data to aid interpretation.

The Chirsposo Sur Target is one of five discrete targets on the La Higuera IOCG Project. It comprises an interpreted strong hydrothermal magnetite alteration system under thin gravel cover in the southern project area. Inversion of the ground magnetic data indicates the system comprises a steeply-dipping north-south oriented magnetite alteration system of 1.2 km strike length. The interpreted body is also coincident with an intense (>30 mV/V) north-south IP chargeability trend that stretches over 2.4km, along with a broadly coincident 0.5-1.0 mGal residual gravity anomaly.

Two historic vertical diamond holes at the Chirsposo Sur Target, drilled approximately 200m to the west of the body intersected IOCG-style alteration with weak copper mineralisation (8m @ 0.23% Cu from 38m in hole CB-02), as reported in the NI 43-101 technical report filed by Tribeca Resources on October 24, 2022, and demonstrate strong magnetite alteration with a coarse-grained pyrite-dominated sulphide assemblage.

The planned drill program comprises three diamond holes for approximately 1,050m, with two holes to test discrete magnetic highs within the target, and one hole to test a rare resistivity low anomaly in the IP data.

Tribeca has engaged San Diego Torrey Hills Capital, Inc. to provide market awareness and investor relations services to the Company, subject to acceptance by the TSX Venture Exchange. Cliff Mastricola is the principal of Torrey Hills and will be responsible for all activities related to the Company.

Torrey Hills will increase awareness about Tribeca Resources through its relationships with investment professionals, investment advisors, and money managers focused on the microcap market space. Torrey Hills has been engaged at a rate of US$4,500 per month for an initial term of four months. After the initial term, the agreement will be automatically extended, subject to a 30-day termination notice by either party. The Company has also agreed to a one-time grant of 175,000 incentive stock options exercisable at a price of C$0.22 per share for a period of three years.

Stock options have been granted to Global Ore as incentive stock options for their role as consultants to the Company. A total of 270,000 stock options have been granted, exercisable for a period of three years at a price per share that is the higher of the closing market price of the Company’s common shares on February 11, 2026 and the closing price on the date of this news release.

Dr. Paul Gow, CEO of Tribeca Resources, prepared and approved the scientific and technical information in this press release. He is a qualified person for the purposes of National Instrument 43-101.

Tribeca Resources is a portfolio-driven copper explorer focused on northern Chile.

Tribeca Resources’ flagship La Higuera IOCG Project has seen approximately 10,000m of drilling with mineralization defined over a 1.4 kilometer strike length. The Chiricuto and Jiguata projects are earlier stage porphyry copper-gold-molybdenum targets, held under purchase option agreements.

Source: Tribeca Resources